1 # Copyright 2012 GRNET S.A. All rights reserved.
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4 # without modification, are permitted provided that the following
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32 # or implied, of GRNET S.A.
37 from image_creator.os_type import OSBase, sysprep
42 sensitive_userdata = [
48 def __init__(self, rootdev, ghandler, output):
49 super(Unix, self).__init__(rootdev, ghandler, output)
51 self.meta["USERS"] = " ".join(self._get_passworded_users())
52 # Delete the USERS metadata if empty
53 if not len(self.meta['USERS']):
54 self.out.warn("No passworded users found!")
55 del self.meta['USERS']
57 def _get_passworded_users(self):
59 regexp = re.compile('(\S+):((?:!\S+)|(?:[^!*]\S+)|):(?:\S*:){6}')
61 for line in self.g.cat('/etc/shadow').splitlines():
62 match = regexp.match(line)
66 user, passwd = match.groups()
67 if len(passwd) > 0 and passwd[0] == '!':
68 self.out.warn("Ignoring locked %s account." % user)
74 @sysprep(enabled=False)
75 def remove_user_accounts(self, print_header=True):
76 """Remove all user accounts with id greater than 1000"""
79 self.out.output("Removing all user accounts with id greater than "
82 if 'USERS' not in self.meta:
85 # Remove users from /etc/passwd
88 metadata_users = self.meta['USERS'].split()
89 for line in self.g.cat('/etc/passwd').splitlines():
90 fields = line.split(':')
91 if int(fields[2]) > 1000:
92 removed_users[fields[0]] = fields
93 # remove it from the USERS metadata too
94 if fields[0] in metadata_users:
95 metadata_users.remove(fields[0])
97 passwd.append(':'.join(fields))
99 self.meta['USERS'] = " ".join(metadata_users)
101 # Delete the USERS metadata if empty
102 if not len(self.meta['USERS']):
103 del self.meta['USERS']
105 self.g.write('/etc/passwd', '\n'.join(passwd) + '\n')
107 # Remove the corresponding /etc/shadow entries
109 for line in self.g.cat('/etc/shadow').splitlines():
110 fields = line.split(':')
111 if fields[0] not in removed_users:
112 shadow.append(':'.join(fields))
114 self.g.write('/etc/shadow', "\n".join(shadow) + '\n')
116 # Remove the corresponding /etc/group entries
118 for line in self.g.cat('/etc/group').splitlines():
119 fields = line.split(':')
120 # Remove groups tha have the same name as the removed users
121 if fields[0] not in removed_users:
122 group.append(':'.join(fields))
124 self.g.write('/etc/group', '\n'.join(group) + '\n')
126 # Remove home directories
127 for home in [field[5] for field in removed_users.values()]:
128 if self.g.is_dir(home) and home.startswith('/home/'):
132 def cleanup_passwords(self, print_header=True):
133 """Remove all passwords and lock all user accounts"""
136 self.out.output("Cleaning up passwords & locking all user "
141 for line in self.g.cat('/etc/shadow').splitlines():
142 fields = line.split(':')
143 if fields[1] not in ('*', '!'):
146 shadow.append(":".join(fields))
148 self.g.write('/etc/shadow', "\n".join(shadow) + '\n')
151 def cleanup_cache(self, print_header=True):
152 """Remove all regular files under /var/cache"""
155 self.out.output('Removing files under /var/cache')
157 self.foreach_file('/var/cache', self.g.rm, ftype='r')
160 def cleanup_tmp(self, print_header=True):
161 """Remove all files under /tmp and /var/tmp"""
164 self.out.output('Removing files under /tmp and /var/tmp')
166 self.foreach_file('/tmp', self.g.rm_rf, maxdepth=1)
167 self.foreach_file('/var/tmp', self.g.rm_rf, maxdepth=1)
170 def cleanup_log(self, print_header=True):
171 """Empty all files under /var/log"""
174 self.out.output('Emptying all files under /var/log')
176 self.foreach_file('/var/log', self.g.truncate, ftype='r')
178 @sysprep(enabled=False)
179 def cleanup_mail(self, print_header=True):
180 """Remove all files under /var/mail and /var/spool/mail"""
183 self.out.output('Removing files under /var/mail & /var/spool/mail')
185 self.foreach_file('/var/spool/mail', self.g.rm_rf, maxdepth=1)
186 self.foreach_file('/var/mail', self.g.rm_rf, maxdepth=1)
189 def cleanup_userdata(self, print_header=True):
190 """Delete sensitive userdata"""
192 homedirs = ['/root'] + self.ls('/home/')
195 self.out.output("Removing sensitive user data under %s" %
198 for homedir in homedirs:
199 for data in self.sensitive_userdata:
200 fname = "%s/%s" % (homedir, data)
201 if self.g.is_file(fname):
202 self.g.scrub_file(fname)
203 elif self.g.is_dir(fname):
204 self.foreach_file(fname, self.g.scrub_file, ftype='r')
206 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :